Whilst browsing a question ( Why cannot I compile `\documentclass{minimal}\document . \enddocument` ? as it happens), I noticed that there is a spam post there. It has been deleted so is not visible to people with reputation below 10k, but I'm not sure that I particularly want to see posts like this when browsing the forum. The pink highlighting actually makes it less ignorable since it's a fairly rare thing to encounter.
This particular post isn't offensive, just irrelevant and ugly, but I can imagine posts that would be offensive, even when outlined in pink.
An obvious solution would be to blank the post, leaving maybe a remark saying: "This was a spam post, it has been blanked.". The edit history contains the original post so it can be checked that it was a genuine spam post. Anyone with the reputation to see it should know about edit history as well, so nothing is being hidden here, just tidied out of the way.
Does this sound like a reasonable thing to do? I thought I'd find out what others thought before unilaterally doing anything myself.